EP1305102A2 - Procede et systeme de purification ou epuration d'un courant gazeux ou d'un gaz - Google Patents

Procede et systeme de purification ou epuration d'un courant gazeux ou d'un gaz

Info

Publication number
EP1305102A2
EP1305102A2 EP01951847A EP01951847A EP1305102A2 EP 1305102 A2 EP1305102 A2 EP 1305102A2 EP 01951847 A EP01951847 A EP 01951847A EP 01951847 A EP01951847 A EP 01951847A EP 1305102 A2 EP1305102 A2 EP 1305102A2
Authority
EP
European Patent Office
Prior art keywords
biocide
contaminants
gas
stream
gaseous body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01951847A
Other languages
German (de)
English (en)
Inventor
Shawn Alan Stewart
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1305102A2 publication Critical patent/EP1305102A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/62—Carbon oxides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20—Method-related aspects
    • A61L2209/22—Treatment by sorption, e.g. absorption, adsorption, chemisorption, scrubbing, wet cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons

Definitions

  • THIS invention relates to a method and system for purifying or cleansing a gas stream or gaseous body containing one or more contaminants.
  • SBS Sick Building Syndrome
  • BBI Building Related Illness
  • SBS is used to describe the situation in which building occupants experience acute health and comfort defects that are linked to time spent in the building.
  • BRI is the term used when diagnosable illness and symptoms are identified and directly attributed to airborne building material contaminants. In modern society, it is believed that most people spend as much as 90% of their time indoors.
  • the US Environmental Protection Agency (EPA) has indicated that IAP may be between 2-5 times higher than accepted levels, and up to 100 times higher than outdoor pollution levels.
  • IAQ is rated within the top 5 of the US EPA's most critical global concerns alongside ozone depletion, global warming and the like. It has been reported, for instance, that in 1989, the US economy suffered a staggering US $65 bn loss due to SBS and BRI. The absenteeism levels, due to poor health caused by IAP, resulted in this huge productivity decrease.
  • a method of purifying or cleansing a stream of gas or gaseous body containing one or more contaminants, in particular air or an exhaust gas stream includes the steps of contacting the gas stream or gaseous body with a biocide containing liquid so as to eliminate, in whole or in part, the contaminant(s).
  • the biocide containing liquid is preferably an aqueous solution, suspension or emulsion of the biocide.
  • the biocide preferably comprises hydrogen peroxide (H 2 O 2 ) in combination with a catalyst for enhancing the activity thereof, the catalyst preferably comprising a superoxidedismutase formed from the combination of elemental copper (Cu), silver (Ag), manganese (Mn) and zinc (Zn).
  • the H 2 O 2 is typically present in the biocide in an amount of about 0.000003% to about 15% v/v, preferably about 0.003% to about 3% v/v, in particular about 0.3% v/v.
  • the Cu, Mn and Zn are typically present in an amount of about 100ppb to about lOOOppm, preferably about 3 to 7ppm, in particular about 5ppm.
  • the Ag is typically present in an amount of about 100ppb to about lOOOppm, preferably about 3 to 9 ppm, in particular about 7ppm.
  • the liquid biocide is preferably provided in the form of a fine spray or mist.
  • the method is preferably used to purify the air in an air conditioning unit of a building such as an office block, house, hospital, shopping mall, stadium, or the like, a vehicle such as a motor vehicle, bus, truck, ship or train, an aircraft or the like, in mines and other underground environments or an exhaust gas or other gas emission from an industrial factory or the like.
  • a building such as an office block, house, hospital, shopping mall, stadium, or the like
  • a vehicle such as a motor vehicle, bus, truck, ship or train, an aircraft or the like, in mines and other underground environments or an exhaust gas or other gas emission from an industrial factory or the like.
  • the invention extends to a system for purifying a gas stream or gaseous body, the system including a gas purifying unit arranged to bring a liquid biocide into contact with a gas stream or gaseous body passing through the unit in order to eliminate, in whole or in part, contaminants in the gas stream or gaseous body.
  • the method and system find particular application in the elimination of contaminants selected from inorganic contaminants such as CO, NO 2 and SO 2 , organic contaminants such as formaldehyde, hexane and acetone, particulate matter such as dust particles and smoke particles, and microorganisms such as viruses for example influenza, small pox and the like, bacteria, for example legionella and other airborne bacteria, and fungi or their spores, in particular anaerobic micro-organisms.
  • inorganic contaminants such as CO, NO 2 and SO 2
  • organic contaminants such as formaldehyde, hexane and acetone
  • particulate matter such as dust particles and smoke particles
  • microorganisms such as viruses for example influenza, small pox and the like, bacteria, for example legionella and other airborne bacteria, and fungi or their spores, in particular anaerobic micro-organisms.
  • the method and system are preferably used in the combating of sick building syndrome (SBI) and building related illness (BRI).
  • SBI sick building syndrome
  • BBI building related illness
  • Figure 1 is a schematic side view of a gas purification system of the invention.
  • Figure 2 is a cross-sectional view on the line 2-2 of Figure 1.
  • the invention provides a method and system for eliminating, in whole or in part, contaminants in a gas stream or gaseous body such as air or an exhaust gas or gas emission stream.
  • a gas purification system 10 of the invention is shown schematically.
  • the system 10 consists of a scrubber unit 12, as shown more clearly in Figure 2, a liquid collection unit 14 and an air dryer unit 16 (optional), all in gas flow communication with one another.
  • the scrubber unit 2 includes a plurality of spray nozzles 18 for introducing a fine spray or mist 20 of a biocide solution, suspension or emulsion into the scrubber chamber 22 thereof.
  • a fine spray or mist 20 of a biocide solution, suspension or emulsion into the scrubber chamber 22 thereof.
  • air or other gas containing contaminants passes through the scrubber 12, in the direction of the arrows in Figure 1 , it contacts the spray or mist.
  • the contaminants in the gas or air stream come into contact with the fine mist or spray, they are taken up by the spray or mist droplets and hence removed from the air stream.
  • the biocide acts to kill the micro-organisms.
  • the biocide solution typically including water as the carrier, collects under normal gravitational forces in the collection unit 14 whereafter it flows through outlet conduit 24 and is pumped into a filter unit 26 by a pump 28.
  • the contaminants in the solution are removed in the filter 26 whereafter the water is pumped into the water feed tank 30.
  • a biocide feeder 32 typically in the form of a drip supply tank, feeds biocide into the water in the tank 30 before it is pumped via the conduit 34 into the scrubber unit 12.
  • the collection unit 14 includes a water separator 36 at a front end 38 thereof for separating excess water droplets as the air stream exits the collection unit 14.
  • the decontaminated air passing from the collection unit 14 may have a relatively high relative humidity, in which case it is optional to pass it through a heating chamber or dryer unit 16 before continuing through the rest of the air conditioning system.
  • the method and system of the invention can be used to eliminate, in whole or in part, a number of contaminants including inorganic contaminants such as CO, NO 2 and SO 2 , organic contaminants such as formaldehyde, hexane and acetone, particulate matter such as dust particles and smoke particles, and micro-organisms such as viruses for example influenza, small pox and the like, bacteria, for example legionella and other airborne bacteria, and fungi or their spores, in particular anaerobic microorganisms.
  • inorganic contaminants such as CO, NO 2 and SO 2
  • organic contaminants such as formaldehyde, hexane and acetone
  • particulate matter such as dust particles and smoke particles
  • micro-organisms such as viruses for example influenza, small pox and the like, bacteria, for example legionella and other airborne bacteria, and fungi or their spores, in particular anaerobic microorganisms.
  • biocide which acts on the micro-organisms
  • Inorganic gasses CO, NO 2 , SO 2 ;
  • Particulate matter dust of various particle sizes and tobacco smoke

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Catalysts (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)
  • Separation Of Particles Using Liquids (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

L"invention porte sur un procédé et un système éliminant totalement ou partiellement les éléments contaminants présents dans un courant gazeux ou dans un gaz tels, que l"air, les gaz d"échappement, ou les effluents gazeux. Ledit procédé consiste à mettre en contact le courant gazeux ou le gaz avec un liquide renfermant un biocide afin den éliminer totalement ou partiellement le ou les éléments contaminants. Ledit liquide est par exemple une solution, suspension, ou émulsion aqueuse contenant du peroxyde hydrogène (H2O2), associée à un catalyseur en renforçant l"activité. Ledit catalyseur est de préférence une superoxyde dismutase formée d"une combinaison de cuivre (Cu), argent (Ag), manganèse (Mn) et zinc (Zn) élémentaires. Le procédé et le système s"utilisent en particulier dans la lutte contre le syndrome des bâtiments hermétiques et les maladies liées.
EP01951847A 2000-07-24 2001-07-24 Procede et systeme de purification ou epuration d'un courant gazeux ou d'un gaz Withdrawn EP1305102A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA200003719 2000-07-24
ZA200003719 2000-07-24
PCT/IB2001/001320 WO2002007860A2 (fr) 2000-07-24 2001-07-24 Procede et systeme de purification ou epuration d"un courant gazeux ou d"un gaz

Publications (1)

Publication Number Publication Date
EP1305102A2 true EP1305102A2 (fr) 2003-05-02

Family

ID=25588836

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01951847A Withdrawn EP1305102A2 (fr) 2000-07-24 2001-07-24 Procede et systeme de purification ou epuration d'un courant gazeux ou d'un gaz

Country Status (10)

Country Link
US (1) US7022297B2 (fr)
EP (1) EP1305102A2 (fr)
JP (1) JP2004504123A (fr)
KR (1) KR20030051603A (fr)
CN (1) CN1462207A (fr)
AU (1) AU2001272694A1 (fr)
CA (1) CA2417154A1 (fr)
IL (1) IL154121A0 (fr)
NZ (1) NZ524377A (fr)
WO (1) WO2002007860A2 (fr)

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AU2004264779B2 (en) 2003-01-31 2008-04-03 Steris Inc. Building decontamination with vaporous hydrogen peroxide
CN100400108C (zh) * 2006-08-11 2008-07-09 中北大学 室内空气湿式氧化净化方法
EP1894581A1 (fr) * 2006-08-31 2008-03-05 CellCoTec B.V. Réparation de tissu cartilagineux avec un gel contenant des chondrocytes
CA2711118C (fr) * 2008-02-11 2017-01-03 Ecolab Inc. Utilisation de complexes activateurs pour ameliorer un nettoyage a basse temperature dans des systemes de nettoyage au peoxyde alcalin
US20090325841A1 (en) 2008-02-11 2009-12-31 Ecolab Inc. Use of activator complexes to enhance lower temperature cleaning in alkaline peroxide cleaning systems
JP4915958B2 (ja) * 2008-03-26 2012-04-11 パナソニック株式会社 空気清浄装置
US20110189049A1 (en) 2008-05-09 2011-08-04 Martin Beaulieu Method for treating odors
BRPI1015030A2 (pt) 2009-04-14 2016-04-12 Groupe Conseil Procd Inc método de redução do conteúdo de compostos orgânicos voláteis solúveis em água presentes em um gás
EP2462056B1 (fr) * 2009-08-03 2016-10-19 PeroxyChem LLC Activation d'eau oxygenée par catalyseur
CN102989292A (zh) * 2012-10-18 2013-03-27 郑丽 甲醛清除剂的制备方法
CN103846006B (zh) * 2014-03-24 2015-10-28 福建武夷烟叶有限公司 一种废气处理系统
CN104041514A (zh) * 2014-04-24 2014-09-17 洛阳蓝凯生物科技有限公司 一种高效快速杀菌消毒液的制备方法
CN105126608B (zh) * 2015-08-17 2017-09-12 兰州大学 一种处理氮氧化物的方法
US10456736B2 (en) 2015-10-19 2019-10-29 Paloza Llc Method and apparatus for purification and treatment of air
CN106268231B (zh) * 2016-08-29 2018-08-10 哈尔滨工业大学 一种除尘脱硫脱硝一体化装置
DE102016125466A1 (de) * 2016-12-22 2018-06-28 Keller Lufttechnik Gmbh + Co. Kg Anlage zur Nassabscheidung von Partikeln
FR3079758B1 (fr) * 2018-04-04 2023-01-20 Ifp Energies Now Procede de traitement d'air entrant dans et/ou sortant hors d'un espace confine
US20210323699A1 (en) * 2020-04-15 2021-10-21 Charles Thomas Myers Aircraft disinfecting system
CN111841164B (zh) * 2020-06-17 2022-02-08 浙江怡丰印染有限公司 一种低脱附难度的仿孢子式印染废气处理设备
US20210402338A1 (en) * 2020-06-24 2021-12-30 Darryl Lind H2O2 Filter Media Cleaning
GB202207006D0 (en) * 2022-05-13 2022-06-29 Eirchemicals Ltd Air sterilisation unit and method for sterilising air

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Also Published As

Publication number Publication date
KR20030051603A (ko) 2003-06-25
WO2002007860A3 (fr) 2002-08-22
WO2002007860A2 (fr) 2002-01-31
JP2004504123A (ja) 2004-02-12
CA2417154A1 (fr) 2002-01-31
IL154121A0 (en) 2003-07-31
NZ524377A (en) 2004-08-27
CN1462207A (zh) 2003-12-17
AU2001272694A1 (en) 2002-02-05
US7022297B2 (en) 2006-04-04
US20040028586A1 (en) 2004-02-12

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